Vessel | Titanic |
| Sister ships | Olympic | Britannic (II) |
| Built by | Harland and Wolff Belfast |
| Total Service | 1912 - 1912 |
| White Star Line Service | 1912 - 1912 |
| Demise | Accident |
| Dimensions (ft imperial) | 850 (length) x 92 (breadth) x 59 (depth) |
| Tonnage | 46,328 |
| Speed | 21 |
| Hull construction | Steel |
| Engine configuration | Combination engine(s) geared to triple screws |
| Details | Sank on maiden voyage with the loss of 1,523 lives. A mere 705 surivived |
Vessel | Britannic (II) |
| Sister ships | Olympic | Titanic |
| Built by | Harland and Wolff Belfast |
| Total Service | 1915 - 1916 |
| White Star Line Service | 1915 - 1916 |
| Demise | War loss |
| Dimensions (ft imperial) | 852 (length) x 94 (breadth) x 64 (depth) |
| Tonnage | 48,158 |
| Speed | 21 |
| Hull construction | Steel |
| Engine configuration | Combination engine(s) geared to triple screws |
| Details | Requisitioned as a hospital ship |
Vessel | Nomadic (II) |
| Sister ships | No sister ships |
| Built by | Harland and Wolff Belfast |
| Total Service | 1911 - 1968 |
| White Star Line Service | 1911 - 1927 |
| Demise | Preserved |
| Dimensions (ft imperial) | 220 (length) x 37 (breadth) x 12 (depth) |
| Tonnage | 1,273 |
| Speed | 12 |
| Hull construction | Steel |
| Engine configuration | Compound engine(s) geared to double screws |
| Details | Tender built for the use of Olympic class at Cherbourg |
Vessel | Traffic (II) |
| Sister ships | No sister ships |
| Built by | Harland and Wolff Belfast |
| Total Service | 1911 - 1941 |
| White Star Line Service | 1911 - 1927 |
| Demise | War loss |
| Dimensions (ft imperial) | 175 (length) x 35 (breadth) x 12 (depth) |
| Tonnage | 675 |
| Speed | 12 |
| Hull construction | Steel |
| Engine configuration | Compound engine(s) geared to double screws |
| Details | Same use as Nomadic. Vessel lost during German Naval service. |
Vessel | Zeelandic |
| Sister ships | No sister ships |
| Built by | Harland and Wolff Belfast |
| Total Service | 1911 - 1941 |
| White Star Line Service | 1911 - 1927 |
| Demise | War loss |
| Dimensions (ft imperial) | 477 (length) x 63 (breadth) x 31 (depth) |
| Tonnage | 8,090 |
| Speed | 13 |
| Hull construction | Steel |
| Engine configuration | Quadruple engine(s) geared to double screws |
| Details | Built for White Star/Shaw, Savill and Albion joint service. Lost after air and torpedo attack |
Vessel | Ceramic |
| Sister ships | No sister ships |
| Built by | Harland and Wolff Belfast |
| Total Service | 1913 - 1942 |
| White Star Line Service | 1913 - 1934 |
| Demise | War loss |
| Dimensions (ft imperial) | 655 (length) x 69 (breadth) x 44 (depth) |
| Tonnage | 18,495 |
| Speed | 15 |
| Hull construction | Steel |
| Engine configuration | Combination engine(s) geared to triple screws |
| Details | Torpedoed and sank in 1942 with the loss of 655 lives |
Vessel | Zeppelin |
| Sister ships | No sister ships |
| Built by | Bremer Vulkan Germany |
| Total Service | 1915 - 1934 |
| White Star Line Service | 1919 - 1920 |
| Demise | Wrecked (scrapped) |
| Dimensions (ft imperial) | 550 (length) x 67 (breadth) x 35 (depth) |
| Tonnage | 14,167 |
| Speed | 15 |
| Hull construction | Steel |
| Engine configuration | Quadruple engine(s) geared to double screws |
| Details | Managed by White Star Line after her surrender to the allies in 1919 |
Vessel | Justicia |
| Sister ships | No sister ships |
| Built by | Harland and Wolff Belfast |
| Total Service | 1917 - 1918 |
| White Star Line Service | 1917 - 1918 |
| Demise | War loss |
| Dimensions (ft imperial) | 740 (length) x 86 (breadth) x 43 (depth) |
| Tonnage | 32,234 |
| Speed | 18 |
| Hull construction | Steel |
| Engine configuration | Combination engine(s) geared to triple screws |
| Details | Ex. Holland American Line's S.S. Statendam. Torpedoed and sunk, 1918 |
Vessel | Belgic (IV) |
| Sister ships | No sister ships |
| Built by | Harland and Wolff Belfast |
| Total Service | 1917 - 1936 |
| White Star Line Service | 1917 - 1923 |
| Demise | Scrapped |
| Dimensions (ft imperial) | 670 (length) x 78 (breadth) x 45 (depth) |
| Tonnage | 24,547 |
| 27,132 [1923] | |
| Speed | 17 |
| Hull construction | Steel |
| Engine configuration | Combination engine(s) geared to triple screws |
| Details | Ex Red Star Line's S.S. Belgenland |
Vessel | Calgaric |
| Sister ships | No sister ships |
| Built by | Harland and Wolff Belfast |
| Total Service | 1918 - 1934 |
| White Star Line Service | 1927 - 1934 |
| Demise | Scrapped |
| Dimensions (ft imperial) | 550 (length) x 67 (breadth) x 43 (depth) |
| Tonnage | 16,063 |
| Speed | 16 |
| Hull construction | Steel |
| Engine configuration | Combination engine(s) geared to triple screws |
| Details | Ex Pacific Steam Navigation Co's S.S. Orca |
Vessel | Delphic (II) |
| Sister ships | Gallic (II) | Bardic |
| Built by | Workman Clark Belfast |
| Total Service | 1918 - 1948 |
| White Star Line Service | 1925 - 1933 |
| Demise | Scrapped |
| Dimensions (ft imperial) | 465 (length) x 58 (breadth) x 29 (depth) |
| Tonnage | 8,006 |
| Speed | 14 |
| Hull construction | Steel |
| Engine configuration | Triple expansion engine(s) geared to double screws |
| Details | Shipping Controller's S.S. War Icarus, transferred to IMM in 1919 |
Vessel | Gallic (II) |
| Sister ships | Delphic (II) | Bardic |
| Built by | Workman Clark Belfast |
| Total Service | 1918 - 1956 |
| White Star Line Service | 1920 - 1933 |
| Demise | Scrapped |
| Dimensions (ft imperial) | 465 (length) x 58 (breadth) x 29 (depth) |
| Tonnage | 7,914 |
| Speed | 14 |
| Hull construction | Steel |
| Engine configuration | Triple expansion engine(s) geared to double screws |
| Details | Shipping Controller's S.S. War Angus managed by White Star Line 1918-1920 |
Vessel | Bardic |
| Sister ships | Delphic (II) | Gallic (II) |
| Built by | Harland and Wolff Belfast |
| Total Service | 1918 - 1941 |
| White Star Line Service | 1919 - 1925 |
| Demise | War loss |
| Dimensions (ft imperial) | 465 (length) x 58 (breadth) x 29 (depth) |
| Tonnage | 9,010 |
| Speed | 14 |
| Hull construction | Steel |
| Engine configuration | Triple expansion engine(s) geared to double screws |
| Details | Shipping Controller's S.S. War Priam purchased by White Star Line in 1919. Convoy loss |
Vessel | Vedic |
| Sister ships | No sister ships |
| Built by | Harland and Wolff Govan |
| Total Service | 1918 - 1934 |
| White Star Line Service | 1919 - 1930 |
| Demise | Scrapped |
| Dimensions (ft imperial) | 460 (length) x 58 (breadth) x 37 (depth) |
| Tonnage | 9,302 |
| Speed | 14 |
| Hull construction | Steel |
| Engine configuration | Turbine engine(s) geared to double screws |
| Details | Requisitioned for British Government service, 1918 |
Vessel | Regina |
| Sister ships | Pittsburgh | Doric (II) |
| Built by | Harland and Wolff Belfast |
| Total Service | 1918 - 1947 |
| White Star Line Service | 1925 - 1929 |
| Demise | Scrapped |
| Dimensions (ft imperial) | 575 (length) x 69 (breadth) x 41 (depth) |
| Tonnage | 16,313 |
| Speed | 15 |
| Hull construction | Steel |
| Engine configuration | Combination engine(s) geared to triple screws |
| Details | War service followed by White Star Line/Dominion Line joint service until 1925 |